Multilayered containers

Abstract

Multilayered containers and methods of forming multilayered containers are described. The multilayered containers comprise one or more walls defining a storage region for containing one or more substances therein. Each wall of the multilayered containers comprises a plurality of layers, wherein each layer provides at least one of a barrier for containing one or more substances within the storage region or structural integrity to the multilayered containers. The manufacturing of the multilayered containers does not form per- and polyfluoroalkyl substances.

1 . A multilayered container comprising:
 a storage region configured to contain one or more substances; and   one or more walls defining the storage region, each wall comprising:
 a first layer configured to provide a liquid barrier to the storage region, wherein the first layer comprises a high-density polyethylene material; 
 a second layer configured to provide a gaseous barrier to the storage region, 
 wherein the second layer comprises an ethyl vinyl alcohol material; and 
 a third layer configured to provide rigidity to the one or more walls, 
 wherein the first layer is an innermost layer of each wall, the third layer is an outermost layer of each wall, and the second layer is between the first layer and the third layer, 
 wherein the one or more walls do not comprise a fluorinated polyethylene material. 
   
     
     
         2 . The multilayered container of  claim 1 ,
 wherein each wall further comprises a fourth layer comprising a nylon material,   wherein the fourth layer is between the first layer and the third layer.   
     
     
         3 . The multilayered container of  claim 1 ,
 wherein the first layer constitutes 5% to 60% of a thickness of each wall,   wherein the second layer constitutes 5% to 50% of the thickness of each wall, and   wherein the third layer constitutes 5% to 50% of the thickness of each wall.   
     
     
         4 . The multilayered container of  claim 3 , wherein each wall further comprises:
 a fourth layer between the first layer and the third layer,   wherein the fourth layer constitutes 5% to 30% of the thickness of the multilayered container.   
     
     
         5 . The multilayered container of  claim 4 , wherein the fourth layer does not comprise an adhesive material. 
     
     
         6 . The multilayered container of  claim 1 , wherein the third layer comprises at least one of a high-density polyethylene material or a low-density polyethylene material. 
     
     
         7 . The multilayered container of  claim 6 , wherein the first layer and the third layer prevent degradation of the second layer. 
     
     
         8 . The multilayered container of  claim 1 , wherein the one or more substances comprise at least one of a polar solvent or a non-polar solvent. 
     
     
         9 . A multilayered container comprising:
 a storage region configured to contain one or more substances; and   one or more walls defining the storage region, each wall comprising:
 a first layer configured to provide a liquid barrier to the storage region; 
 a second layer configured to provide a gaseous barrier to the storage region; and 
 a third layer configured to provide rigidity to the one or more walls, 
   wherein the first layer is an innermost layer of each wall, the third layer is an outermost layer of each wall, and the second layer is between the first layer and the third layer,   wherein the one or more walls do not comprise a fluorinated polyethylene material.   
     
     
         10 . The multilayered container of  claim 9 ,
 wherein the first layer constitutes 5% to 60% of a thickness of the multilayered container,   wherein the second layer constitutes 5% to 50% of the thickness of the multilayered container, and   wherein the third layer constitutes 5% to 50% of the thickness of the multilayered container.   
     
     
         11 . The multilayered container of  claim 10 , further comprising:
 a fourth layer between the first layer and the third layer,   wherein the fourth layer constitutes 5% to 30% of the thickness of the multilayered container.   
     
     
         12 . The multilayered container of  claim 11 , wherein the thickness of the multilayered container is up to 10 millimeters. 
     
     
         13 . The multilayered container of  claim 9 , wherein the first layer and the third layer comprise a polyethylene material. 
     
     
         14 . The multilayered container of  claim 13 , wherein the storage region has a volume within a range of 1 liter to 5.5 liters. 
     
     
         15 . The multilayered container of  claim 9 , wherein the one or more substances comprise one or more pathology reagents. 
     
     
         16 . The multilayered container of  claim 15 , wherein the one or more pathology reagents comprise at least one of aldehydes, hematoxylin, alcohols, xylenes, or oxidizing agents. 
     
     
         17 . A method for forming a multilayered container, the method comprising:
 extruding a multilayered parison comprising:
 a first layer comprising a high-density polyethylene material; 
 a second layer comprising an ethyl vinyl alcohol material; and 
 a third layer comprising a high-density or low-density polyethylene material, 
 wherein the first layer is an innermost layer of the multilayered parison, the third layer is an outermost layer of the multilayered parison, and the second layer is between the first layer and the third layer, 
 wherein the multilayered parison does not comprise a fluorinated polyethylene material; 
   enclosing at least a portion of the multilayered parison with a mold having a shape;   blowing air into the multilayered parison such that the multilayered parison forms to the shape of the mold to form the multilayered container; and   removing the multilayered container from the mold.   
     
     
         18 . The method of  claim 17 , further comprising removing an excess material from the multilayered container. 
     
     
         19 . The method of  claim 18 , wherein removing the excess material forms a handle of the multilayered container. 
     
     
         20 . The method of  claim 17 , wherein the multilayered parison further comprises a fourth layer.